IL4 and hemorrhage: Vitreous samples from 60 patients (Table 1) with PIOL (n = 17), OCL (n = 9), uveitis (n = 23) or retinal detachment (RD) without hemorrhage (n = 11) were analyzed for IL-2, IL-4, IL-6, IL-10, IFNγ, and TNFα concentrations by CBA.